0220be23a4
- NodeSelector: array_values inside cache closure (fix key gaps) - GatewayRegistry: prune expired entries from live_list on access - Removed orphaned lethean::names view (replaced by names::index) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
72 lines
2 KiB
PHP
72 lines
2 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Mod\Proxy\Services;
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use Illuminate\Support\Facades\Cache;
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use Mod\Chain\Services\DaemonRpc;
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/**
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* Selects a gateway node matching the requested service type.
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*
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* $selector = app(NodeSelector::class);
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* $node = $selector->selectNode('mobile'); // returns gateway with cap=mobile
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* $node = $selector->selectNode('proxy'); // returns gateway with cap=proxy
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* $nodes = $selector->availableNodes('vpn'); // all VPN-capable gateways
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*/
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class NodeSelector
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{
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public function __construct(
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private readonly DaemonRpc $rpc,
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) {}
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/**
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* Get all nodes with a given capability.
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*
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* $nodes = $selector->availableNodes('proxy');
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*/
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public function availableNodes(string $capability = ''): array
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{
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$aliases = Cache::remember('proxy.nodes', 60, function () {
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$result = $this->rpc->getAllAliases();
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$aliases = $result['aliases'] ?? [];
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return array_values(array_filter($aliases, function ($alias) {
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$comment = $alias['comment'] ?? '';
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return str_contains($comment, 'type=gateway') || str_contains($comment, 'type=exit');
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}));
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});
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if (empty($capability)) {
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return array_values($aliases);
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}
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return array_values(array_filter($aliases, function ($alias) use ($capability) {
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return str_contains($alias['comment'] ?? '', $capability);
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}));
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}
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/**
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* Select a single node matching capability. Round-robin via cache counter.
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*
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* $node = $selector->selectNode('proxy');
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*/
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public function selectNode(string $capability): ?array
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{
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$nodes = $this->availableNodes($capability);
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if (empty($nodes)) {
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return null;
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}
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// Round-robin selection
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$counterKey = "proxy.rr:{$capability}";
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$index = (int) Cache::get($counterKey, 0);
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$node = $nodes[$index % count($nodes)];
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Cache::put($counterKey, $index + 1, 3600);
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return $node;
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}
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}
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